Means for operating lock-hinges



(No Model.)

L. ABBOTT. MEANS FOR OPERATING LOCK HINGES.

WITNESSES- @9/9W. QOMAJAW,

UNITED STATES PATENT OEEicE.

LEVI ABBOTT, OF ARLINGTON, ASSIGNOR OF ONE-THIRD TO A. G. MINTON, OFBOSTON, MASSACHUSETTS.

MEANS FOR OPERATING LOCK-HINGES.

SPECIFICATION forming part of Letters Patent No. 465,810, dated December22, 1891.

Application filed March 9, 1891. Serial No. 384,228. (No model.)

To aZZ whom it may concern.-

Be it known that I, LEVI ABBOTT, of Arlington, in the county ofMiddlesex and State of Massachusetts, have invented certain new anduseful Improvements in Means for Operating Lock-Hinges, of which thefollowing is a specification.

My invention has relation to that class of lock-hinges in which onemember is con- IO structed as a lever adapted to be raised and loweredin order to unlock it from or look it with the other member; and it isthe object of the invention to provide such improvements in the meansfor raising and lowering the lever as shall effect a positive operationof the latter, serve to hold the lever in place on the blind or shutter,and which shall be exceedingly simple in and cheap of construction.-

The invention consists of a rod or length of wire fulcrumed or pivotedupon the frame of the blind and bent so as to form a crank-lever, theouter or angular end or portion bein g bent upward and connected withthe movable member of the hinge and the opposite end being provided withmeans which may be taken hold of by the user to rock the cranklever inits bearings and so raise and lower the said movable member.

Reference is to be had to the annexed drawings, and to the letters ofreference marked thereon, forming a part of this specification, the sameletters designating the same parts or features, as the case may be,wherever they occur.

In the drawings, Figure 1 is a perspective view of the lower portion ofa blind and the adjacent parts of a window-casing having a lock-hingeequipped with my improvement. Fig. 2 is a vertical sectional detailview.Fig. 3 i s a sectional detail view showing the hinge and the improvementin plan.

In the drawings, a designates the windowcasing. b is the blind. c is thefixed member of the hinge, provided with a pintle-socket and radialslots (Z, the said fixed member being secured to the window-casing a. eis the movable member of the hinge, pivoted upon the blind-frame atf andprovided at its swing ing end with a pintle p to enter the socket of thefixed member and with radial ribs or tenons to engage the slots (2. Asthus far described the construction is substantially the same as thatshown in United States Patent No. 393,200,granted to me November20,1888, and reference may be had to said patent for fuller informationconcerning the structural character of hinges to which my invention isparticularly applicable.

9 is a rod or length of wire suitably ful- 6o crumed upon theblind-frame and having its outer portion h bent at an angle to itscenter portion to form a crank-lever. The end of the angular portion his bent outward under, upward outside of, and inward over the movablemember towardits swinging end, so that when the rod g is rocked in itsbearing on the blind-frame, as it may be by taking hold of theangularinner end i of said rod, the member 6 may be raised and loweredin a positive manner. In addition to serving as a means for raising andlowering the movable member of the hinge, the rod 9 operates to guideand keep in proper position the member c in its swinging movements.

j designates a spring, which operates upon the member g to hold itnormally down into engagement with the fixed member 0.

Changes may be made in the form and arrangement of parts comprising theinvention So without departing from the nature or spirit of theinvention.

Having thus explained the nature of my invention and described one wayof constructing and using the same, I declare that what I claim is- As ameans for operating the pivoted member of a lock-hinge, the combination,with the blind-frame, of a crank-lever g, formed of a single piece ofwire fulcrumed on the blind- 9o frame,the axis of said fulcrum passingthrough the blind-frame, the end of its outer angular part It being bentupward and around the said movable member, and its inner part 1' beingbent perpendicular to its axis to provide opcrating means, as set forth.

In testimony whereof I have signed my name to this specificatiomin thepresence of two subscribing witnesses, this 28th day of February, A. D.1891.

LEVI ABBOTT. I Witnesses:

ARTHUR W. ORossLEY, O. F. BROWN.

